# Quick Start

### 1. Base URL

```
https://api.x402.unibase.com/v2
```

BSC mainnet and testnet supported.

### 2. Health Check

```bash
curl "https://api.x402.unibase.com/v2/health"
```

### 3. Key Endpoints

| Method   | Endpoint   | Description                  |
| -------- | ---------- | ---------------------------- |
| GET/POST | /verify    | Verify payment               |
| GET/POST | /settle    | Settle payment               |
| GET      | /health    | Health check                 |
| GET      | /supported | Networks and payment schemes |

### 4. Protocol Flow

1. Server returns **402** with payment spec
2. Client signs payment, sends proof
3. Unibase Pay verifies and settles on-chain

### 5. Supported (V2)

* **Assets**: All ERC20 via Permit2; EIP-3009 gasless
* **Scheme**: exact

### Next Steps

* [API Reference](/unibase-docs/unibase-pay/api-reference.md)
* [Privy Wallet](/unibase-docs/unibase-pay/privy-wallet.md) — Agent custodial wallet
* [x402 Protocol](https://x402.org)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://unibaseio.gitbook.io/unibase-docs/unibase-pay/quick-start.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.